Telephone attachment



Oct. 16, 1928. 1,688,276

2. E. JONES TELEPHONE ATTACHMENT Filed Feb.-l2, 1927 IN VEN TOR.

z EZ JDNES ATTORNEY tion, to'be closed only when desired.

,umreosrarss em-em 1 ,688,276 rase;

zunnm E. mm, :OF'SAN FRANCISCO, eALIronmA.

a mal: ATTACHMEND,

" Application filed, February 12, 1927. Serial Nb. 167,773.

iii'telcphone attacl'imcnts and has particular referc-ncelto 'a-valvefor a' telephone transmitter.@ The principal object of this invention isto produce a device wl1ich"'wi1l cut oil extraneous noise from enteringthe transmitter of a telephone.

Another object is to produce device which may be attached to anystandard telephone transmitter. I

.A further object is to produce a device which will normallyremain inopen posi- A still further object is to produce means which will enablethe user of the phone to hear more plainly when using the instrument. 7

Other objects and advantages will be ap parent during the course of thefollowing description.

In the accompanying drawings forming a part of this specification and inwhich like numerals are employed to designate like parts throughout thesame,

Figure 1' is a fragmentary view ofa telephone transn'iitter having mydevice attached thereto and partly shown on crosssection, and

Figure 2is a front elevation of my device. In using a telephone, it isoften difiicult to hear due to the fact that extraneous noises enter thetransmitter, working back over the line into the receiver through whichthe person listening. It also often occurs that the person using theinstrument wishes to close oil the transmitter while holdmg aconversation with. another person, which conversation it desired that.the party at the other end 01'? the line should not hear.

telerring to the d 'awings wherein for the purpose of illustration isshown apreferred embodiment of my invention. the. numeral 5 designatesan upper portion of a telephone stand having a transmitter (3 of theusual construction. This transmitter is provided with a face plate 7raving a threaded opening 8. It is into this threaded opening that theusual mouth piece. 9 is screwed.

My device consists of a cylindrical memher 11 having a threaded end 12attached to engage the threads 8 of the face plate 7.

The member 11 is also internally threaded so as to receive the threadedportion 13 This invention relates to innprovementsof the mouthpiece'tl.Positioned within the cylindrical member 11 is a pivoted membcrl thavina disc 16 secured to a portion thereof. This pivoted-member embodies inits construction an upper portion on which the disc is mounted and has alower )ortion 'lt, defining a handle, whereby the disc mayscrewedtherein." The mouthpiece is then screwed into. my device so thatthe assembly appears as shown .111 Figure 1. When the user ol the phonedesires to close the valve so thatexl-raneous noises will not pass fromthe mouth piece to the diaphragm of the phone, he pushes upon the handle17 against the tension of spring 18 which causes the disc 16 to take upthe posit-ion shown in Figure 2, thereby entirely blocking the passagethrough which any noise might pass. It will thus be seen that I haveproduced a device, simple in construction, economical to manufacture andone which is well within the purchase price of the average user.

It is to be understood that the form of my invention herewith shown anddescribed is to'h-e taken as a preferred example of the same and thatvarious changes relative to diametrically extending throng i saidcylindrical member and pivoted therein, a discsecured to said upperportion for partial rotary movement in a horizontal plane in saidcylindrical member, and a handle formed with said upper portion wherebythe disc may be moved to close said cylindrical member and means fornormally retaining said disc in open position.

2. In combination with a telephone transmitter having a fiiceplate andmonth piece, of a cylindrical meniiberhaving threaded ends forthreadedly securing the sameto the face plate and to 'tl'i'readedlyreceive the mouth piece in a manner whereby the cylindrical member isdisposed between the face plate and mouth piece, a member verticallyarranged througl'rsaid cylindrical 'men'iber and pivoted therein, a discsecured to the pivoted portion. of the 'i-erti'cally arrangedi'ueinb'e'r :I'orclosing the eylii'idrieal member,- ahandle"iiiclildedin saicl'vertically arranged member for movingtbje same onits pivot andfor partially rotating said disc for closing the cylindrical men'ibe'rand a coil spring Surrounding the 'fe1"tic'ally arranged member and'hitvi'ngit:ji ends secured to the cylindrical member and vertically.arranged member respectively for-normally retaining said disc in openposition.

lncombination.with a telephone transmitter'having a face plate, of acylindrical member adapted to be secured at one end-'te the face l' late a'n'ieuiber extending dian'ietrically through said cylindricalmember. and

rota-table therein about a vertical axis, a disc willnn-san'l eyhndruznl member end secured to the axially rotatable men'iber 'torotatetherewith to control 'the passa e through said cylindrical member, meansor 1mpart-' ing rotation in one direction to the axially rotatablemember, and an operating handle associated with the axially rotatablemember.

4. ln'com'bination with a telephone transmitter having a face plate, ofa cylindrical n'icniber, means forsecuring; the same to :the faceplate,a'meniberjextendingdiametrically through said cylindrical member and'pivo tedmeans for normally retaining said 'disc in a given positionwith referenceto' the inner wall of the cylindrical member.

ln testm'iony whereof I ullix n'iysignature;

ZEDD IE E. JONES.

